Multiple choice questions (MCQ) on Theory of machines

Multiple choice questions (MCQ) on Theory of machines

1. A rigid body possesses_____degrees of freedom.

a. One              b. Two              c. Four              d. Six

(Ans:d)

 

2. Which of the following is an open pair?

a. Journal bearing                      b. Ball and Socket joint

c. Leave screw and nut              d. None of the above

(Ans:c)

 

3. Which of the following is a higher pair?

a. Turning pair               b. Screw pair

c. Belt and pulley          d. None of the above

(Ans:c)

 

4. A higher pair has__________.

a. Point contact             b. Surface contact

c. No contact                d. None of the above

(Ans:a)

 

5. In a ball bearing, ball and bearing forms a

a. Turning pair               b. Rolling pair               c. Screw pair                 d. Spherical pair

(Ans:b)

 

6. Transmission angle is the angle between

a. Input link and coupler             b. Input link and fixed link

c. Output link and coupler          d. Output link and fixed link

(Ans:c)

 

7. Which of the following is an inversion of Single slider crank chain?

a. Beam engine             b. Rotary engine

c. Oldham’s coupling     d. Elliptical trammel

(Ans:b)

 

8. ________ is an inversion of Double slider crank chain.

a. Coupling rod of a locomotive             b. Scotch yoke mechanism

c. Hand pump                                       d. Reciprocating engine

(Ans:b)

 

9. A ball and a socket forms a

a. Turning pair               b. Rolling pair

c. Screw pair                 d. Spherical pair

(Ans:d)

 

10. The Kutzbach criterion for determining the number of degrees of freedom (n) is (where l = number of links, j = number of joints and h = number of higher pairs)

a. n = 3(l-1)-2j-h             b. n = 2(l-1)-2j-h

c. n = 3(l-1)-3j-h             d. n = 2(l-1)-3j-h

(Ans:a)